BARBOUR AND NOBLE: LIZARDS OF THE GENUS AMEIVA. 479 
two keeled supraoculars preceded by a group of five or six small 
keeled scales in the place of an anterior supraocular; the two large 
supraoculars separated from the supraciliaries by a double row of 
granules; last supraocular separated from the outer occipitals by four 
or five rows of granules; six or seven large supralabials; five infra- 
labials; between infralabials and chin-shields a wedge of a single row 
of small scales together with several large scales extending anteriorly 
to the first chin-shield; chin and throat covered with granules of 
varying size, a broad band of slightly larger ones extending across the 
middle; on the area between the two throat folds three or four rows 
of small scales, the median ones about three times as large as the gulars, 
all irregularly arranged; under side of the body with six longitudinal 
and twenty-six transverse rows of scales; three somewhat rounded 
preanal plates arranged in a triangle, the anterior one much larger 
than the others; on the lower arm a single row of large antebrachials 
extending its entire length on the lower arm two or three rows of very 
small, irregular keeled scales; on the posterior side near the elbow 
joint two or three rows of postbrachials, median row formed of very 
large ones; under side of thighs covered with three rows of large scales 
ending abruptly in granules; twenty-four femoral pores; on the under 
side of the tibia two rows of scales, the outer about twice as large as 
the inner; on the upper side of the wrist between phalanges and joint 
two transverse rows of large scales; outer toe extending a little further 
than theinner; tail covered with straight keeled scales, dorsally strongly 
keeled; about nineteen scales in the fifteenth ring from the base. 
Coloration: — Dorsal surface dark olive-green; on each side a dark 
brown band, bordered above and below by a light blue-gray stripe, 
running the length of the body; a pale median line not very distinct 
running from the occipitals to the tail; ventral surface dark blue-gray 
suffused with yellow on the abdomen. 
Variation: — A female (same data as above) is similar to the male 
except that the pale median stripe is brighter and wider than the 
other pale lines, a condition which is reversed in the adult male. 
Remarks:— The description was made of an adult male that meas- 
ured one hundred and eighteen millimeters from snout to vent. 
Cope’s type of Holcosus bridgesii (Acad. nat. sci. Phila. No. 9651) 
which we have examined is in fair preservation. It is rather less than 
half grown. The locality slip which accompanied it bore simply 
the word “?Ecuador.” In the original description (Proc. Acad. nat. 
sci. Phila., 1868, p. 306-307) curiously enough no mention whatever 
was made of habitat or locality. An examination of a series of this 
species and a comparison with A. septemlineata and A. undulata makes 
clear the relationship of this form. It does not seem at all advisable 
to recognize Cope’s monotypic genus. 
